Approach for trolley-frogs



I F! H. MILLER. APPROACH For: TROLLEY FROGS. APPLICATION FILED APR.9| 1919.

Patented Mar. 1, 1921.

INVENTOR Frederick H Mi/ler W ATTORNEY WITNESSES: gm/ w UNITED STAT-Es FREDERICK H. MILLER, or WILKINSBURG, PENNSYLVANIA, ASSIGNOR T WESTING- HOUSE ELECTRIC & MANUFACTURING COMPANY, A. CORPORATION OF.PENNS YL- f VANIA.

Application filed April 9,

' is a specification.

My invention relates to trolley-conductor devices, such as frogs and crossings, and particularly to renewable approach members therefor. r

One object of my invention is to provide a device of the above indicated character that shall be simple and durable in construction,

economical to manufacture and effective in operation.

Another object of my invention is to 1'0- vide a trolley-conductor device that s all comprise only two members at an approach end, which members may be readily placed together in operative position by a simple tool, such as apart.

Another object of my invention is to provide an approach member, ductor device, that shall comprise a single integral member having a wedge portion that may be moved relative thereto 1n mounting the same in operative position.

In practising my invention, I provlde a removable extension member for a frog or other trolley-conductor device to take up the shocks and wear incident to the assage of trolley contact members, in which the frog and the extension member are formed and related to permit them to be coiiperatively engaged without the aid of any other holding members.

a hammer, and as readily taken In one form of my device, the approach member comprises an integrally related wedge portion that may be moved relative thereto in securing the same to a frog.

Figure 1 of the accompanying drawings, is an end View of a trolley frog and an aproach member embodying my invention; ig. 2 is a side elevational view of an approach member and one end of the trolley frog shown in Fig. 1; Fig. 3 is a side view, partially in elevation and partially in section, of a modified form of my device; Fig. 4 is a view taken along the line IVIV of Fig. 3, and Fig. 5 is a side elevational view Specification of Letters Patent.

for a trolley-con- APIPRO-ACH r0 TRoLLnY-FRoGs.

. Patented Mar. 1,1921. 1919. Serial No. 288,664;

of a modified form of approach member embodying my invention.

A frog 1, for the reception of a trolley conductor 2, comprises a 4m which the conductorisdisposed. An extension or approach member 5, preferably of malleable material, has an inverted chan nel portion 6' embracing the conductor 2 and a centrally projecting portion or tongue .8 disposed inthe channel above the conductor 2. In Figs. 1 and 2, the-member 5 is provided with a portion 9 that spans the channel body member "channel member '4 and, has' depending portions 10 that embrace outwardly extending projections 11 at the end of the member 4.

he projections 11 have sloping surfaces 12 for wedgmg cooperation with similar surfaces 13 on the portions 10.

In mounting the device, the conductor 2 is placed in the bottom of the channel member 4, the member 5 is placed with its portion 6 over the conductor ward the member 4 until the surfaces 12 and 13 engage.v

member 5 will rigidly securethe member 5 111 wedging relation to the frog 1 and the conductor 2.

and is moved to- A; few -well directed blows against a projectlon 14 at one end of the:

In Figs.'3 and 4, the wedging surfaces 12 and 13 of the members 4 and 5, respectively, are within the channel, the modification here shown requiring a smaller amount of-material but differing in substantially no "other respect from the device shown in Fi s. 1 and 2.

n Fi 5, the member 5 has a wedge portion 15 t at is connected thereto by a portion 16 of relatively small cross sectional area. The portions 8 and 15 maybe cast in spaced relation, as indicated by the dotted-line position of the portion 15, to avoid the requirement of cored holes or machine work,

and afterward bent to the relation shown by the full lines. In this form, the member 5 is transportable as a unit and permits a a end of the wedge portion 15 to stretch or rupture the portion 16.

While I have shown and described particular f rm of my nt on, chan es may be effected therein Without departing from the spirit and'scope thereof, as set forth in the appended claims.

Iclaim as my invention 1. A trolley-conductor device comprising a body member of substantially channel shape for the reception of a conductor and having a longitudinal sloping surface thereon, and an approach member having a cooperating similar sloping surface for wedging engagement with the sloping surface of said body member to rigidly secure both of said members and a conductor in operative relati0n.-- 1

trolley-conductor device comprising a, body member and a single integral approach member cooperating in longitudinally-slidable .Wedging engagement therewith.

, a body member and .a single integral apvproach member cooperating in substantially flat surface Wedging engagementtherewith a body member 3. A. trolley-conductor devicecomprising" a body member and a single integral approach member 1 having relatively movable portions and cooperating in wedging engagement therewith.

5. An approach member for a trolley-conductor device comprising relatively-mow able integral wedge and body portions for efi'ecting'the attachment of said approach member to said device.

6. A trolley-conductor having a wedge receiving portion and an approach member having a yieldable Wedge portion permitting the at tachment of said. approach member to said body member. V V

7. A. trolley-conductor device comprising device comprising I a. body member and an approach member 7 for wedging attachment to each other, one of sa d members comprising integral portions that may be moved relative to each otherin eflecting said wedging. attachment.

In testimony whereof, I havev hereunto ubs ib d my name t s. 2nd day. of Ap il, 1919. i l i f FREDERICK H. MILLER. 

